TY - GEN
T1 - Ultra-low power current-to-digital sensor for switching DC-DC converters
AU - Marti-Arbona, Edgar
AU - Bakkaloglu, Bertan
AU - Kiaei, Sayfe
PY - 2012
Y1 - 2012
N2 - Current sensing is a critical need for detecting system short circuit, thermal management, load balancing, and maximum power point tracking (MPPT) in DC-DC converters. An ultra low-power current sensing and digitization circuit based on a Current-to-Digital Conversion (IDC) technique is presented. The circuit is based digitizing the discharge period of a sampled capacitor without the need for an ADC. Relative to sensing methods based on series resistors and analog-to-digital converters to digitize the sampled current, the proposed circuit achieves higher accuracy with less complexity, and occupies a fraction of the area, and power consumption. The circuit is designed using a 100V compliant 0.35μm CMOS technology for a 60V boost DC-DC converter. For load current ranging from around 0.1 to 1A, the proposed sensor total power consumption is less than 0.57 nano-W and less than 1% measurement error.
AB - Current sensing is a critical need for detecting system short circuit, thermal management, load balancing, and maximum power point tracking (MPPT) in DC-DC converters. An ultra low-power current sensing and digitization circuit based on a Current-to-Digital Conversion (IDC) technique is presented. The circuit is based digitizing the discharge period of a sampled capacitor without the need for an ADC. Relative to sensing methods based on series resistors and analog-to-digital converters to digitize the sampled current, the proposed circuit achieves higher accuracy with less complexity, and occupies a fraction of the area, and power consumption. The circuit is designed using a 100V compliant 0.35μm CMOS technology for a 60V boost DC-DC converter. For load current ranging from around 0.1 to 1A, the proposed sensor total power consumption is less than 0.57 nano-W and less than 1% measurement error.
KW - Capacitor
KW - Current-to-Digital Conversion
KW - Switching converters
UR - http://www.scopus.com/inward/record.url?scp=85007333765&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:85007333765
T3 - PRIME 2012; 8th Conference on Ph.D. Research in Microelectronics and Electronics
SP - 329
EP - 332
BT - PRIME 2012; 8th Conference on Ph.D. Research in Microelectronics and Electronics
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2012
Y2 - 12 June 2012 through 15 June 2012
ER -